When a category is set as a Members Category, the breadcrumbs listed below the picture, in the Category field, don't have a link to that username.
Below the image you will see:
Category: vBadvanced Gallery > Member Categories > Members' Category
Clicking on the last breadcrumb takes you to the list of all the individual member categories. There's no (easy) way to jump to that user's Member Category. You can click the link to Find All Images by that user, but that will return images in other categories as well.
My thought is that it should be:
Category: vBadvanced Gallery > Member Categories > Members' Category > ZeroSixty